Add some more information in identifying what caused this error.

1 files changed, 1 insertions, 1 deletions

diff --git a/container-search/src/main/java/com/yahoo/prelude/fastsearch/FastSearcher.java b/container-search/src/main/java/com/yahoo/prelude/fastsearch/FastSearcher.java
index 697cf910719..e0572f174a5 100644
--- a/container-search/src/main/java/com/yahoo/prelude/fastsearch/FastSearcher.java
+++ b/container-search/src/main/java/com/yahoo/prelude/fastsearch/FastSearcher.java
@@ -327,7 +327,7 @@ public class FastSearcher extends VespaBackEndSearcher {
                 result.hits().addError(ErrorMessage.createTimeout(e.getMessage()));
                 return;
             } catch (IOException e) {
-                result.hits().addError(ErrorMessage.createBackendCommunicationError("Error filling hits with summary fields, source: " + getName()));
+                result.hits().addError(ErrorMessage.createBackendCommunicationError("Error filling hits with summary fields, source: " + getName() + " Exception thrown: " + e.getMessage()));
                 return;
             }
             if (skippedHits == 0 && packetWrapper != null) {